导入依赖D,D依赖C(1.2版本)
1.1 maven 自己调解原则
1.1.1 第一声明者优先原则
谁先定义的就用谁的传递依赖
1.1.2 路径近者优先原则
直接依赖级别高于传递依赖
1.2 排除依赖
<dependencies> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-spring-plugin</artifactId> <version>2.5.10.1</version> <!-- 排除依赖 --> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.9.RELEASE</version> </dependency> </dependencies>
1.3 版本锁定
<properties> <spring.version>4.3.9.RELEASE</spring.version> </properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> </dependencies> </dependencyManagement>